WO2023111038A1 - Transformateur comprenant une pluralité d'enroulements - Google Patents

Transformateur comprenant une pluralité d'enroulements Download PDF

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Publication number
WO2023111038A1
WO2023111038A1 PCT/EP2022/085894 EP2022085894W WO2023111038A1 WO 2023111038 A1 WO2023111038 A1 WO 2023111038A1 EP 2022085894 W EP2022085894 W EP 2022085894W WO 2023111038 A1 WO2023111038 A1 WO 2023111038A1
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WO
WIPO (PCT)
Prior art keywords
winding portion
winding
turns
transformer
axial direction
Prior art date
Application number
PCT/EP2022/085894
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English (en)
Inventor
Rafael MURILLO JASO
Antonio Nogués Barrieras
Carlos Manuel ROY MARTÍN
Lorena Cebrián Lles
Víctor Manuel GARCÍA CHOCANO
María Pilar MORATA ARRUE
Fernando MUÑOZ ARRIBAS
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Hitachi Energy Switzerland Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Hitachi Energy Switzerland Ag filed Critical Hitachi Energy Switzerland Ag
Publication of WO2023111038A1 publication Critical patent/WO2023111038A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/303—Clamping coils, windings or parts thereof together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F2027/348—Preventing eddy currents

Definitions

  • the present disclosure relates to a transformer comprising a plurality of windings and a respective method for controlling losses of the transformer.
  • DERs including a solar panel.
  • a power converter in particular a transformer comprising a plurality of windings, so as to allow connection of multiple apparatus to a power distribution with a high power efficiency.
  • the DERs in particular photovoltaic panels, generate relatively low voltages, LV, with respect to the operation voltage of the power distribution grid, HV.
  • the currently proposed possible winding configurations of multi-winding transformers are categorized based on the geometrical orientation of a plurality of LV windings and at least one HV winding.
  • a stacked LV winding configuration winds a first LV winding around a transformer core at a first position along the transformer core, a second LV winding around the transformer core at a second position along the transformer core, a first split HV winding made by two paralleled HV circuits around the first LV winding, and the remaining split HV winding made by two paralleled HV circuits around the second LV winding.
  • Such configuration exhibits a relatively high leakage impedance between the two LV windings, in particular a reactance arising from a leakage inductance, at the LV windings with respect to the leakage impedance at the HV winding.
  • said configuration achieves low leakage reactance ratio, k, (e.g. K ⁇ 0.1), defined as: wherein X P denotes the leakage reactance from the primary side (at the HV winding) and X s denotes the leakage reactance from the secondary side (at the LV winding).
  • This configuration has been widely applied in transformer designs, but, depending on the HV winding technology, can lead to large winding heights, sometimes exceeding the maximum transformer heights acceptable for a particular application.
  • One possible solution to reduce the transformer height is to use a non-split HV winding, instead of the split HV winding made by two paralleled HV circuits.
  • the stacked LV configuration in particular when the two LV windings show a significantly different load, produces a certain pattern of the leakage flux, which in turn produces a large increase of the winding eddy losses, leading to unacceptable temperature hot spots.
  • a split stacked LV winding is proposed as an extension of the stacked LV winding configuration.
  • the split stacked LV winding further winds a second LV winding around the first LV winding of the stacked LV winding configuration and a first LV winding around the second LV winding of the stacked LV winding configuration.
  • a high leakage reactance ratio e.g. K > 0.1
  • This configuration due to the fact each of the two LV windings are distributed along the full height of the HV winding, avoids the large eddy losses and the formation of hot spots, in case the two LV windings show significantly different loads.
  • the achieved leakage reactance ratio is high (e.g. K > 0.1)
  • the impedance between the two LV windings is small, thereby potentially failing to fulfill with the impedance requirements in some particular applications.
  • the present disclosure relates to a transformer comprising a plurality of windings and a respective method for controlling losses of the transformer.
  • the present disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. Additionally, the specific order and/or hierarchy of steps in the methods disclosed herein are merely exemplary approaches. Based upon design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be re-arranged while remaining within the scope of the present disclosure. Thus, those of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or acts in a sample order, and the present disclosure is not limited to the specific order or hierarchy presented unless expressly stated otherwise.
  • FIG. 1 illustrates a transformer according to an embodiment of the present disclosure.
  • FIG. 2 illustrates a cross sectional view of a transformer according to an embodiment of the present disclosure.
  • FIG. 3 illustrates a cross sectional view of a transformer according to an embodiment of the present disclosure.
  • FIG. 4 illustrates a transformer according to an embodiment of the present disclosure.
  • FIG .5 illustrates a transformer according to an embodiment of the present disclosure.
  • FIG. 6 illustrates a cross sectional view of a transformer according to an embodiment of the present disclosure.
  • the present disclosure relates to a transformer comprising a plurality of windings, the plurality of windings comprising a first winding and a second winding, wherein the first winding comprises a first winding portion at a first position in an axial direction and in a radial direction, and a second winding portion at a second position in the axial direction and in the radial direction, wherein the first position is different from the second position in the axial direction, wherein the number of turns of the first winding portion is different from the number of turns of the second winding portion, wherein the second winding comprises a third winding portion at a third position in the axial direction and in the radial direction, and a fourth winding portion at a fourth position in the axial direction and in the radial direction, wherein the third position is different from the fourth position in the axial direction, and wherein the number of turns of the third winding portion is different from the number of turns of the fourth winding portion.
  • the axial direction is parallel to a tangent vector of an axis of a core of the transformer and the radial direction is parallel to a vector within an orthogonal plane having a normal vector parallel to the tangent vector.
  • the axial direction is parallel to a tangent vector tangential to an axis of a core of the transformer and the radial direction is parallel to a vector within an orthogonal plane having a normal vector parallel to the tangent vector.
  • the number of turns of the first winding portion is greater than the number of turns of the second winding portion and/or the number of turns of the third winding portion is greater than the number of turns of the fourth winding portion.
  • the number of turns of the first winding portion is greater, by at least 50%, than the number of turns of the second winding portion and/or the number of turns of the third winding portion is greater, by at least 50%, than the number of turns of the fourth winding portion.
  • the number of turns of the second winding portion is greater than the number of turns of the first winding portion and/or the number of turns of the fourth winding portion is greater than the number of turns of the third winding portion.
  • the number of turns of the second winding portion is greater, by at least 50%, than the number of turns of the first winding portion and/or the number of turns of the fourth winding portion is greater, by at least 50%, than the number of turns of the third winding portion.
  • the number of turns of the first winding portion is equal to the number of turns of the third winding and/or the number of turns of the second winding portion is equal to the number of turns of the fourth winding portion.
  • the ratio of the number of turns in the first winding portion to the number of turns in the second winding portion is equal to the ratio of the number of turns in the third winding portion to the number of turns in the fourth winding portion.
  • the first winding portion is electrically connected, in particular in series, with the second winding portion and the third winding portion is electrically connected, in particular in series, with the fourth winding portion.
  • the first winding portion at least partially overlaps with the second winding portion in the radial direction and/or the third winding portion at least partially overlaps with the fourth winding portion in the radial direction.
  • the first winding portion at least partially overlaps with the fourth winding portion in the axial direction and/or radial direction.
  • the fourth winding portion at least partially overlaps with the second winding portion in the radial direction.
  • the third winding portion at least partially overlaps with the second winding portion in the axial direction and/or in the radial direction.
  • the plurality of windings further comprises a third winding at a fifth position in the axial direction and in the radial direction.
  • the third winding at least partially overlaps with the first winding and/or the second winding in the axial direction and/or the radial direction.
  • the present disclosure also relates to a method for controlling losses of a transformer according to any one of the above described embodiments.
  • the first winding and the second winding are secondary windings and the third winding is a primary winding.
  • the voltage across the primary winding is relatively higher than the voltage cross at least one secondary winding.
  • FIG. 1 illustrates a transformer according to an embodiment of the present disclosure.
  • FIG. 1 illustrates a cross sectional view of a transformer 100 wound with a plurality of windings comprising a first winding and a second winding.
  • the illustrated cross- sectional view is a planar view of a plane through said transformer 100, wherein said plane comprises a vector in an axial direction 101 of the transformer 100.
  • said plane may alternatively comprise a vector parallel to the vector in the axial direction 101 of the transformer, in particular having a centroid as a point of reference. It is further understood by the skilled person that said plane may comprise any other predetermined vector.
  • the axial direction is the direction perpendicular to the plane of a predetermined structure, in particular a cube, more particularly a cuboid. Said plurality of windings are wound around the transformer 100, in particular around the cuboid of the transformer defining the axial direction, more particularly in a radial direction. It is understood by the skilled person in the art that the wording ‘wound’ is used, without limitation particularly on the resulting shape of the windings, to describe a general process of forming a desired geometrical sizes, shapes, or the like of the windings, particularly around a point, an axis, or the like.
  • the radial direction is defined as the direction described by a vector in the plane perpendicular to the vector in the axial direction 101.
  • winding in a radial direction may be winding in a circular form or may be winding in any other form or shape.
  • the first winding in said plurality of windings comprises a first winding portion 111 at a first position in the axial direction and in the radial direction, and a second winding portion 112 at a second position in the axial direction and in the radial direction.
  • the first position in the axial direction and in the radial direction describe a point in space defined based on a vector in the axial direction and a vector in the radial direction with respect to a point of reference.
  • the second position in the axial direction and in the radial direction describe a point in space defined based on a vector in the axial direction and a vector in the radial direction with respect to a point of reference.
  • the point of reference to which the first position and the second position refer may be a centroid of the cuboid of the transformer 100 around which said windings are wound.
  • the first position may be a point within the space occupied by the first winding portion 111 and the second position may be a point within the space occupied by the second winding portion 112. The first position is different from the second position in the axial direction.
  • the first position may be a first centroid of the cuboid of the transformer 100, around which the first winding portion 111 is wound. That is, a vector in the radial direction, starting from the first position, may describe a point within the space occupied by the first winding portion 111.
  • the second position may be a second centroid of the cuboid of the transformer 100, around which the second winding portion 112 is wound. That is, a vector in the radial direction, starting from the second position, may describe a point within the space occupied by the second winding portion 112.
  • the first position is different from the second position in the axial direction.
  • the number of turns of the first winding portion 111 is different from the number of turns of the second winding portion 112.
  • the first winding portion 111 is electrically connected to the second winding portion 112, in particular by means of a first wire 119.
  • the second winding in said plurality of windings comprises a third winding portion 123 at a third position in the axial direction and in the radial direction, and a fourth winding portion 124 at a fourth position in the axial direction and in the radial direction.
  • the third position in the axial direction and in the radial direction describe a point in space defined based on a vector in the axial direction and a vector in the radial direction.
  • the fourth position in the axial direction and in the radial direction describe a point in space defined based on a vector in the axial direction and a vector in the radial direction.
  • a reference point to which the third position and the fourth position refer may be a centroid of the cuboid of the transformer 100 around which said windings are wound.
  • the third position may be a point within the space occupied by the third winding portion 223 and the fourth position may be a point within the space occupied by the fourth winding portion 224.
  • the third position is different from the fourth position in the axial direction.
  • the third position may be a third centroid of the cuboid of the transformer 100, around which the third winding portion 123 is wound. That is, a vector in the radial direction, starting from the third position, may describe a point within the space occupied by the third winding portion 123.
  • the fourth position may be a fourth centroid of the cuboid of the transformer 100, around which the fourth winding portion 124 is wound. That is, a vector in the radial direction, starting from the fourth position, may describe a point within the space occupied by the fourth winding portion 124.
  • the first position may be equal to the fourth position in the axial direction and/or the second position may be equal to the third position in the axial direction.
  • the third position is different from the fourth position in the axial direction.
  • the number of turns of the third winding portion 123 is different from the number of turns of the fourth winding portion 124.
  • the third winding portion 123 is electrically connected to the fourth winding portion 124, in particular by means of a second wire 129.
  • the cross signs 199, or equivalently ‘X’ signs, around the first winding portion 111 and the fourth winding portion 124, and around the second winding portion 112 and the third winding portion 123 indicate that the first 111 , the second 112, the third 123, and the fourth winding portions 124 are wound around the cuboid of the transformer 100.
  • the first winding portion is electrically connected, in particular in series, with the second winding portion and the third winding portion is electrically connected, in particular in series, with the fourth winding portion.
  • FIG. 2 illustrates a cross sectional view of a transformer core according to an embodiment of the present disclosure.
  • a transformer core 200 is toroidally shaped and a vector in the axial direction 202 is defined as the tangential vector 202 along the centroid line 201.
  • the tangential vector 202 along the centroid line201 at a position A is perpendicular to the plane comprising a vector in the radial direction 203. It is understood by the person having ordinary skill in the art that any other shapes of the transformer core may be alternatively used adopting the definitions of the axial direction and the radial direction described herein.
  • the axial direction is parallel to a tangent vector of an axis of a core of the transformer and the radial direction is parallel to a vector within an orthogonal plane having a normal vector parallel to the tangent vector.
  • FIG. 3 illustrates a cross sectional view of a transformer according to an embodiment of the present disclosure.
  • the cross-sectional view depicts the plane perpendicular to the vector in the axial direction 101 described in FIG.2. That is, the vector in the axial direction 301 is the vector moving into the page and is positioned at the centroid of the cuboid of the transformer 300.
  • a vector in the radial direction 302 is a vector in the cross- sectional plane.
  • the cross-sectional plane comprises the first position and/or the third position
  • the cuboid of the transformer 300 is interpreted as wound around with the first winding portion 320 and the fourth winding portion 310.
  • the area covered by the first winding portion 320 fully overlaps with the area covered by the fourth winding portion 310. However, it is understood by the skilled person that the area covered by the first winding portion 320 may partially overlap with the area covered by the fourth winding portion 310.
  • the cross- sectional plane comprises the second position and/or the third position
  • the cuboid of the transformer 300 is interpreted as wound around the third winding portion 320 and the second winding portion 310.
  • the area covered by the third winding portion 320 fully overlaps with the area covered by the second winding portion 310. However, it is understood by the skilled person that the area covered by the third winding portion 320 may partially overlap with the area covered by the second winding portion 310.
  • the first winding portion at least partially overlaps with the second winding portion in the radial direction and/or the third winding portion at least partially overlaps with the fourth winding portion in the radial direction.
  • the first winding portion at least partially overlaps with the fourth winding portion in the axial direction and/or radial direction.
  • the fourth winding portion at least partially overlaps with the second winding portion in the radial direction.
  • the third winding portion at least partially overlaps with the second winding portion in the axial direction and/or in the radial direction.
  • FIG. 4 illustrates a transformer according to an embodiment of the present disclosure.
  • FIG. 4 illustrates the transformer 100 and the axial axis 101 depicted in FIG. 2, and shows an exemplary first winding and the second winding.
  • the spatial definitions of the first winding and the second winding follow FIG. 2 as well as the description thereof, thus are omitted here for simplicity.
  • the first winding comprises the first winding portion 411 and the second winding portion 412.
  • the first winding portion 411 is electrically connected to the second winding portion 412.
  • the number of turns of the first winding portion 411 is different from the number of turns of the second winding portion 412.
  • the number of turns of the first winding portion 411 is greater than the number of turns of the second winding portion 412.
  • the first winding portion 411 is connected to the port having an electrical potential of Vi + and the second winding portion 412 is connected to the port having an electrical potential of Vr .
  • a first voltage Vi equal to the potential difference between Vi + and Vr, is applied to the first winding.
  • first winding portion 411 may be connected to the port having an electrical potential of Vr and the second winding portion 412 may be connected to the port having an electrical potential of i + .
  • a first voltage Vi equal to the potential difference between Vi + and Vr, is applied to the first winding.
  • the second winding comprises the third winding portion 423 and the fourth winding portion 424.
  • the third winding portion 423 is electrically connected to the fourth winding portion 424.
  • the number of turns of the third winding portion 423 is different from the number of turns of the fourth winding portion 424.
  • the number of turns of the third winding portion 423 is greater than the number of turns of the fourth winding portion 424.
  • the third winding portion 423 is connected to the port having an electrical potential of V2 + and the fourth winding portion 424 is connected to the port having an electrical potential of Vr .
  • a second voltage V2 equal to the potential difference between V2 + and V 2 ‘, is applied to the second winding.
  • the third winding portion 423 may be connected to the port having an electrical potential of ⁇ l 2 ' and the fourth winding portion 424 may be connected to the port having an electrical potential of V2 + .
  • a second voltage V2 equal to the potential difference between V2 + and V2; is applied to the second winding.
  • the number of turns of the first winding portion is greater than the number of turns of the second winding portion and/or the number of turns of the third winding portion is greater than the number of turns of the fourth winding portion.
  • the number of turns of the first winding portion is greater, by at least 50%, than the number of turns of the second winding portion and/or the number of turns of the third winding portion is greater, by at least 50%, than the number of turns of the fourth winding portion.
  • the number of turns of the second winding portion is greater than the number of turns of the first winding portion and/or the number of turns of the fourth winding portion is greater than the number of turns of the third winding portion.
  • the number of turns of the second winding portion is greater, by at least 50%, than the number of turns of the first winding portion and/or the number of turns of the fourth winding portion is greater, by at least 50%, than the number of turns of the third winding portion.
  • the number of turns of the first winding portion is equal to the number of turns of the third winding and/or the number of turns of the second winding portion is equal to the number of turns of the fourth winding portion.
  • the ratio of the number of turns in the first winding portion to the number of turns in the second winding portion is equal to the ratio of the number of turns in the third winding portion to the number of turns in the fourth winding portion.
  • FIG. 5 illustrates a transformer according to an embodiment of the present disclosure.
  • FIG. 5 illustrates a cross sectional view of a transformer 100 wound with a plurality of windings comprising a first winding and a second winding, as presented in FIG. 1 and the corresponding description thereof.
  • the device in FIG. 5, in particular the plurality of windings further comprises a third winding 531 at a fifth position in the axial direction and in the radial direction.
  • the fifth position in the axial direction and in the radial direction describe a point in space defined based on a vector in the axial direction and a vector in the radial direction.
  • a reference point to which the fifth position refer may be a centroid of the cuboid of the transformer 100.
  • the fifth position may be a point within the space occupied by the third winding 531.
  • the fifth position may be equal to or different from the first, the second, the third, and the fourth position in the axial direction.
  • the cross signs 599, or equivalently ‘X’ sign, around the first winding portion 111 , the second winding portion 112, the third winding portion 123, the fourth winding portion 124, and the fifth winding 531 indicates that the first 111 , the second 112, the third 123, the fourth winding portions 124, and the third winding 531 are wound around the cuboid of the transformer 100.
  • the plurality of windings further comprises a third winding at a fifth position in the axial direction and in the radial direction.
  • the third winding at least partially overlaps with the first winding and/or the second winding in the axial direction and/or the radial direction.
  • the first winding and the second winding are secondary windings and the third winding is a primary winding.
  • the voltage across the primary winding is relatively higher than the voltage cross at least one secondary winding.
  • FIG. 6 illustrates a cross sectional view of a transformer according to an embodiment of the present disclosure.
  • the cross-sectional view depicts the plane orthogonal to the vector in the axial direction 101 described in FIG.5. That is, the axial axis 301 is a vector moving into the page and is positioned at the centroid of the cuboid of the transformer 300.
  • a vector in the radial direction 302 is a vector in the cross-sectional plane.
  • the cross-sectional plane comprises the first position and/or the third position
  • the cuboid of the transformer 300 is interpreted as wound around with the first winding portion 320 and the fourth winding portion 310.
  • the area covered by the first winding portion 320 fully overlaps with the area covered by the fourth winding portion 310.
  • the area covered by the first winding portion 320 may partially overlap with the area covered by the fourth winding portion 310.
  • the cross- sectional plane comprises the second position and/or the third position
  • the cuboid of the transformer 300 is interpreted as wound around the third winding portion 320 and the second winding portion 310.
  • the area covered by the third winding portion 320 fully overlaps with the area covered by the second winding portion 310.
  • the power converter in FIG. 6 further comprises a third winding 630.
  • the area covered by the third winding 630 fully overlaps with the area covered by the first winding portion 320 and/or the third winding portion 320 and the second winding portion 310 and/or the fourth winding portion 310.
  • the area covered by the third winding 630 may partially overlap with the area covered by the first winding portion 320 and/or the third winding portion 320 and the second winding portion 310 and/or the fourth winding portion 310.
  • a transformation (e.g., 100 shown in FIG. 1 or 5) comprises a plurality of windings, wherein the plurality of windings comprises a first winding, a second winding, and a third winding.
  • first winding and the second winding may be secondary windings (e.g., high voltage winding).
  • third winding may be a primary winding (e.g., low voltage winding).
  • first winding and the second winding may be primary windings (e.g., low voltage winding).
  • the third winding may be a secondary winding (e.g., high voltage winding).
  • the first winding comprises a first winding portion (e.g., 111 shown in FIG. 1 or 5) at a first position in an axial direction and in a radial direction, and a second winding portion (e.g., 112 FIG. 1 or 5) at a second position in the axial direction and in the radial direction.
  • the first winding portion may be electrically connected/coupled in series with the second winding portion.
  • the first position may be different from the second position in the axial direction.
  • the number of turns of the first winding portion is different from the number of turns of the second winding portion.
  • the second winding comprises a third winding portion (e.g., 123 shown in FIG. 1 or 5) at a third position in the axial direction and in the radial direction, and a fourth winding portion (e.g., 124 shown in FIG. 1 or 5) at a fourth position in the axial direction and in the radial direction.
  • the third winding portion may be electrically connected/coupled in series with the fourth winding portion.
  • the third position may be different from the fourth position in the axial direction.
  • the number of turns of the third winding portion is different from the number of turns of the fourth winding portion.
  • the first winding portion at least partially overlaps with the fourth winding portion in the axial direction.
  • he third winding portion at least partially overlaps with the second winding portion in the axial direction.
  • the area covered by the first winding portion at least partially overlaps with the area covered by the fourth winding portion
  • the area covered by the third winding portion at least partially overlaps with the area covered by the second winding portion
  • the third winding (e.g., 531 shown in FIG. 5) at least partially overlaps with the first winding and the second winding in the axial direction.
  • the area covered by the third winding (e.g., 531 shown in FIG. 5) at least partially overlaps with the first winding and the second winding.
  • the first winding portion is radially wound around a core of the transformer and the fourth winding portion is radially wound around the first winding portion.
  • the third winding portion is radially wound around the core of the transformer and the second winding portion is radially wound around the third winding portion
  • the third winding is radially wound around the first winding portion, the second winding portion, the third winding portion, and the fourth winding portion.
  • the number of turns of the first winding portion is greater than the number of turns of the second winding portion and/or the number of turns of the third winding portion is greater than the number of turns of the fourth winding portion.
  • the number of turns of the second winding portion is greater than the number of turns of the first winding portion and/or the number of turns of the fourth winding portion is greater than the number of turns of the third winding portion.
  • the axial direction is parallel to a tangent vector of/tangential to an axis of a core of the transformer and the radial direction is parallel to a vector within an orthogonal plane having a normal vector parallel to the tangent vector.
  • the number of turns of the first winding portion is greater than the number of turns of the second winding portion and/or the number of turns of the third winding portion is greater than the number of turns of the fourth winding portion. In an aspect of the particular embodiment, the number of turns of the first winding portion is greater, by at least 50%, than the number of turns of the second winding portion and/or the number of turns of the third winding portion is greater, by at least 50%, than the number of turns of the fourth winding portion.
  • the number of turns of the second winding portion is greater than the number of turns of the first winding portion and/or the number of turns of the fourth winding portion is greater than the number of turns of the third winding portion. In an aspect of the particular embodiment, the number of turns of the second winding portion is greater, by at least 50%, than the number of turns of the first winding portion and/or the number of turns of the fourth winding portion is greater, by at least 50%, than the number of turns of the third winding portion.
  • the number of turns of the first winding portion is equal to the number of turns of the third winding and/or the number of turns of the second winding portion is equal to the number of turns of the fourth winding portion.
  • the ratio of the number of turns in the first winding portion to the number of turns in the second winding portion is equal to the ratio of the number of turns in the third winding portion to the number of turns in the fourth winding portion.
  • the first winding portion is electrically connected, in particular in series, with the second winding portion and the third winding portion is electrically connected, in particular in series, with the fourth winding portion.
  • the first winding portion at least partially overlaps with the second winding portion in the radial direction and/or the third winding portion at least partially overlaps with the fourth winding portion in the radial direction.
  • the first winding portion at least partially overlaps with the fourth winding portion in the axial direction and/or radial direction.
  • the fourth winding portion at least partially overlaps with the second winding portion in the radial direction.
  • the third winding portion at least partially overlaps with the second winding portion in the axial direction and/or in the radial direction.
  • the plurality of windings further comprises a third winding at a fifth position in the axial direction and in the radial direction.
  • the third winding at least partially overlaps with the first winding and/or the second winding in the axial direction and/or the radial direction.
  • the present disclosure also relates to a method for controlling losses of a transformer according to any one of the above described particular embodiment and its aspects.
  • the first winding and the second winding are secondary windings and the third winding is a primary winding.
  • the voltage across the primary winding is relatively higher than the voltage cross at least one secondary winding.
  • a transformer comprising a plurality of windings, the plurality of windings comprising a first winding, a second winding, and a third winding, wherein the first winding and the second winding are secondary windings (e.g., high voltage windings), wherein the third winding is a primary winding (e.g., low voltage winding), wherein the first winding comprises a first winding portion at a first position in an axial direction and in a radial direction, and a second winding portion at a second position in the axial direction and in the radial direction, wherein the first winding portion is electrically connected in series with the second winding portion, wherein the first position is different from the second position in the axial direction, wherein the number of turns of the first winding portion is different from the number of turns of the second winding portion, wherein the second winding comprises a third winding portion at a third position in the axial direction and in the radial
  • a transformer comprising a plurality of windings, the plurality of windings comprising a first winding, a second winding, and a third winding, wherein the first winding and the second winding are secondary windings (e.g., high voltage windings), wherein the third winding is a primary winding (e.g., low voltage winding), wherein the first winding comprises a first winding portion at a first position in an axial direction and in a radial direction, and a second winding portion at a second position in the axial direction and in the radial direction, wherein the first winding portion is electrically connected in series with the second winding portion, wherein the first position is different from the second position in the axial direction, wherein the number of turns of the first winding portion is different from the number of turns of the second winding portion, wherein the second winding comprises a third winding portion at a third position in the axial direction and in the radial direction, and a fourth winding portion at a fourth
  • a transformer comprising a plurality of windings, the plurality of windings comprising a first winding, a second winding, and a third winding, wherein the first winding and the second winding are primary windings (e.g., low voltage windings), wherein the third winding is a secondary winding (e.g., high voltage winding), wherein the first winding comprises a first winding portion at a first position in an axial direction and in a radial direction, and a second winding portion at a second position in the axial direction and in the radial direction, wherein the first winding portion is electrically connected in series with the second winding portion, wherein the first position is different from the second position in the axial direction, wherein the number of turns of the first winding portion is different from the number of turns of the second winding portion, wherein the second winding comprises a third winding portion at a third position in the axial direction and in the radial direction, and a fourth winding portion at a fourth
  • a transformer comprising a plurality of windings, the plurality of windings comprising a first winding, a second winding, and a third winding, wherein the first winding and the second winding are primary windings (e.g., low voltage windings), wherein the third winding is a secondary winding (e.g., high voltage winding), wherein the first winding comprises a first winding portion at a first position in an axial direction and in a radial direction, and a second winding portion at a second position in the axial direction and in the radial direction, wherein the first winding portion is electrically connected in series with the second winding portion, wherein the first position is different from the second position in the axial direction, wherein the number of turns of the first winding portion is different from the number of turns of the second winding portion, wherein the second winding comprises a third winding portion at a third position in the axial direction and in the radial direction, and a fourth winding portion at a fourth
  • the transformer of aspect 6 wherein the number of turns of the first winding portion is greater, by at least 50%, than the number of turns of the second winding portion and/or the number of turns of the third winding portion is greater, by at least 50%, than the number of turns of the fourth winding portion.
  • the transformer of aspect 8 wherein the number of turns of the second winding portion is greater, by at least 50%, than the number of turns of the first winding portion and/or the number of turns of the fourth winding portion is greater, by at least 50%, than the number of turns of the third winding portion.
  • a method for controlling losses of a transformer according to any one of aspects 1 to 18.
  • any reference to an element herein using a designation such as "first,” “second,” and so forth does not generally limit the quantity or order of those elements. Rather, these designations can be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to first and second elements does not mean that only two elements can be employed, or that the first element must precede the second element in some manner.
  • any of the various illustrative logical blocks, units, processors, means, circuits, methods and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two), firmware, various forms of program or design code incorporating instructions (which can be referred to herein, for convenience, as "software” or a "software unit”), or any combination of these techniques.
  • a processor, device, component, circuit, structure, machine, unit, etc. can be configured to perform one or more of the functions described herein.
  • IC integrated circuit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the logical blocks, units, and circuits can further include antennas and/or transceivers to communicate with various components within the network or within the device.
  • a general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine.
  • a processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein. If implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program or code from one place to another.
  • a storage media can be any available media that can be accessed by a computer.
  • such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • memory or other storage, as well as communication components may be employed in embodiments of the present disclosure. It will be appreciated that, for clarity purposes, the above description has described embodiments of the present disclosure with reference to different functional units and processors.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

La présente invention concerne un transformateur comprenant une pluralité d'enroulements, la pluralité d'enroulements comprenant un premier enroulement et un second enroulement, le premier enroulement comprenant une première partie d'enroulement dans une première position dans une direction axiale et dans une direction radiale, et une seconde partie d'enroulement à une seconde position dans la direction axiale et dans la direction radiale, la première position étant différente de la seconde position dans la direction axiale, le nombre de tours de la première partie d'enroulement étant différent du nombre de tours de la deuxième partie d'enroulement, le second enroulement comprenant une troisième partie d'enroulement à une troisième position dans la direction axiale et dans la direction radiale, et une quatrième partie d'enroulement à une quatrième position dans la direction axiale et dans la direction radiale, la troisième position étant différente de la quatrième position dans la direction axiale, et le nombre de tours de la troisième partie d'enroulement étant différent du nombre de tours de la quatrième partie d'enroulement. La présente invention concerne également un procédé permettant de commander les pertes d'un transformateur.
PCT/EP2022/085894 2021-12-17 2022-12-14 Transformateur comprenant une pluralité d'enroulements WO2023111038A1 (fr)

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EP21383154.8A EP4199012A1 (fr) 2021-12-17 2021-12-17 Transformateur comprenant une pluralité d'enroulements
EP21383154.8 2021-12-17

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632798A1 (fr) * 1988-06-14 1989-12-15 Orega Electro Mecanique Transformateur haute tension de televiseur
JP2001167950A (ja) * 1999-12-09 2001-06-22 Hitachi Media Electoronics Co Ltd 高圧トランス
CN201397734Y (zh) * 2009-03-16 2010-02-03 常州特种变压器有限公司 多裂解式整流变压器
CN202585047U (zh) * 2012-05-30 2012-12-05 郑建银 一种分裂式整流变压器的绕组
CN105590734A (zh) * 2016-02-27 2016-05-18 广东广特电气股份有限公司 相同联结组的轴向双分裂干式变压器线圈结构与绕制方法
CN208889439U (zh) * 2018-08-21 2019-05-21 沈阳昊诚电气有限公司 一种辐向分裂变压器绕组

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632798A1 (fr) * 1988-06-14 1989-12-15 Orega Electro Mecanique Transformateur haute tension de televiseur
JP2001167950A (ja) * 1999-12-09 2001-06-22 Hitachi Media Electoronics Co Ltd 高圧トランス
CN201397734Y (zh) * 2009-03-16 2010-02-03 常州特种变压器有限公司 多裂解式整流变压器
CN202585047U (zh) * 2012-05-30 2012-12-05 郑建银 一种分裂式整流变压器的绕组
CN105590734A (zh) * 2016-02-27 2016-05-18 广东广特电气股份有限公司 相同联结组的轴向双分裂干式变压器线圈结构与绕制方法
CN208889439U (zh) * 2018-08-21 2019-05-21 沈阳昊诚电气有限公司 一种辐向分裂变压器绕组

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